I saw a doctor on TV who did a study on people who tend to keep a normal weight vs. overweight people, and he found that the normal-weighted people were on their feet and moving around about 2 1/2 hours more per day than the overweight people. He now stands up to work on his computer, does interviews while walking on a treadmill, and generally keeps moving.

So, if you can stand up and walk around and move around more throughout the day, that should help you as well.